\begin{table}
\centering
\begin{tblr}[         %% tabularray outer open
]                     %% tabularray outer close
{                     %% tabularray inner open
colspec={Q[]Q[]Q[]Q[]},
column{1}={halign=l,},
column{2}={halign=r,},
column{3}={halign=r,},
column{4}={halign=r,},
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\toprule
& Mean & SD & N \\ \midrule %% TinyTableHeader
\textbackslash{}bf Adoption         &        &        &       \\
Any                                  & 0.038  & 0.190  & 37750 \\
Rain Garden                          & 0.017  & 0.129  & 37750 \\
Cistern                              & 0.014  & 0.117  & 37750 \\
Both                                 & 0.007  & 0.082  & 37750 \\
\textbackslash{}bf Peer Adoption    &        &        &       \\
100 Peers                            & 2.928  & 2.991  & 37750 \\
20 Peers                             & 0.615  & 0.988  & 37750 \\
\textbackslash{}bf Peer Eligibility &        &        &       \\
100 Eligible (CS)                    & 90.425 & 14.972 & 37750 \\
100 Eligible (RG)                    & 76.092 & 21.416 & 37750 \\
20 Eligible (CS)                     & 18.637 & 2.916  & 37750 \\
20 Eligible (RG)                     & 16.888 & 4.125  & 37750 \\
\bottomrule
\end{tblr}
\end{table}
